clough



No. 615,430. Patented nee. 6', |898.

.1. cLouGH &'J. BusH.

VARIABLE SPEED AND POWER' MECHANISM FOB MOTOR VEHICLES. (Applicatioq mad Dec. zo, 1897.)

N5. 645,439. Patented Den. 6; |393.

J. cLouGH & Bussi VARIABLE SPEED'ANDPUWEB MECHANISM FUR MOTOR VEHICLES. (Appli-cation tiled Dec. 20,' 1897.)

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" sineimenrion refining part gf Lederwaren@ No. 615,430, 'dated neeabe'ffe, 189s.' Application mea December-zonne?. serai 110.662,664. (roman.)

To all whntf mayfcowerf:

Be it known that We, JOHN GLOUGH,-resid ing at Bradford, and JOSEPH- BUSH, residing at Coventry, England,-subjects of the Queen of England,have inventefi'` certain new and nsefullmprovements in Variable Speed and Power Mechanism lforAl'itoearriages or Motor-y Vehieles, of which the followin gis a speeiiica- This invention has been patented in the following countries: England, No. 2,891, dated, February 8, 1896, and No. 19,( )1{i,dated August 28,1896;*Franee, No. 261,393, dated November 18, 1896; Belgium, No.1'244e, datedv varyin g the speed ef. the vehicle' in relation to'- that ofthe motor.

ln the accompanying-drawings,v Figure 1 represents an elevation of the mechanism con stituting our invention. Fig. 2- represents a plan view, and Fig.' 3 a side view, of the same.

Fig. e represents a diametrical` section, on a' larger scale, of part ofthe mechanism; and Fig. 5 represents a cross-section of the same on. ,the broken line' a b, Figu l` Figsu 6 andiv are separate views of a detail hereinafter re'-, ferred to. l 4

The shaft A'i's 'mounted in -be'aringsA formed inthe framework A3, which is fixed to on forms lpart of theframework of the vehicle. 'ilhe shaft A is positively driven in any cenvenient mannen' from the motor, and the motion of the shaft A istransmitted by the mechanism hereinafter described tothe chain or sprocket Wheel B,which drives the drivingshaft or driving Wheel or Wheels of the vehicle, by means of a chain or its equivalent.

The mechanism. above referred to consists, first, e of a sur. wheel (l, capable of being 5o cliitehed to and revolve with the shaft A or to'be held stationary, and, second, of an an# 'a loose collar G5, (omitted in Fig. 5,)

nular or internallyLtoothed wheel D, also capablejof being clutchedV to and revolve with' the shaft A orto be held stationary, andalso, third, of aplanet-wheel or planet-wheels B2, xed to the chain-'Wheel Bandengaging both the su n-'wheel Cand the annular Wheel D. In this arrangement three speeds of the chain- -Wheel in relation rto thatof the motor are ob. tainable, namely: "First, Whenboth the sunwheel C and the annular wheel-D revolve with the shaftA the chain-WheelB is driven at the same speed` as ,the shaft A; second,'when the sunvvheel is held stationary while the annular v'heel D is driven with the shaft -A the chain-Wheel Bis driven at a reduced speed in relation to the shaft A; th-ird, when the annular Wheel D is'held stationary and the sun- Wheel is driven at the same speed as the shaft A the'ehaimwheel Bis driven at a still more i reduced speed in relation to the shaft A.

The sun-wheel C is loosely mounted upon `the shaft A and is v'provided with a cone-shell .C2 to engage the coneclutel1 C3, mounted upon the shaft A and keyed to it by the key C", so-

as to revolve with it, but be free to be moved longitudinallyupon the shaft to engage or disengage it from-the shell C2.

ed in a similar way to the cone O3 upon the shaft'A. The wheel D is mounted `upon ballbearings Dan'd D6,lyinginba1lraces formed in the central boss D701? the Wheel D, and the eollarAi, formed upon the shaft A, and' also tting upon the boss C6 of the sun-wheel C. P

VThe planet -wheels B2 are mounted upon pins B3, xed in the face of thechain-wheel' B and also in the annular support B4, rigidly secured to the Wheel B by the studs Bi. The' wheel-B and the annular support B* revolve upon the balls B6 and'B'f, respectively lying in the ball-races formed around the collar C5 and the boss C, formed between the shell .C2 andthe--s-un-wheel C.

The whole of the ball-bearings labove deA scribed are adjusted by the screw-'n ut F and the lock-nut- F', fitting the screw-threadid,

It Willi-be readilyiunderstood that by means i of the cones C3 and D3 the sunwheel C and the annular Wheel D may be clutched fast, so as to revolve with the shaft Ayer that either the sun-wheel or the' lannular wheel, or both of them, may be'disengaged fromthe'shaft A. XVe provide band-clutches G and II to bear upon the outer peripheries of the shells- C2 and D2 to hold them stationary when the cones C3 and D3 are disengaged therefrom. These band-clutches are preferably lined with leather J, and one end lof each band is fixed to the framework A3, While the other ends are each connected toa lever or its equivalent,

'by which the bands may be tightened to hold the, parts they embrace stationary or be slackenedvwhen such parts arerequired to revolve.

In order to avoid complication in Working4 and tosimplify the manipulation'of the sev-` eral clutches, YWe arrange themso that they are all controlled by one regulating-lever K. v Thisvlever is mounted inthe holloW-pr jection L, formed upon the shaft L2,.(sepa rately shown in Figs. 3 and 7,) Aand the bevelwheel K2 is rigidly fixed upon the lower end of the lever K, which projects through L.

y The shaft'L2 is mounted in bearings A5 and A6,v fixed-'to the frame A3. Cams-Ls and L4 are loosely mounted upon the shaft L2, which camsengage the upperends of theclutchlevers Maud M2, pivot'ed to the adjustable blocks M3, ixed upon the -loWer part ofA the frame A3. The levers M and M2 are provided with screw, pins M4', which engage holes M5, -for1ned in the collars M6, loosely mountedupon the bosses Cq and D9 of the clutch-cones C3 and D3, but confined longitudinally thereon by the screw-nuts M7. .Balls M8 are placed on each side of. the collars M? to reducejthe' friction. The cams L? a dij have beve'Lteeth L5 formed around their inner faeesgfwhichjteeth engage the teeth of the bevel-wheel K2. C on'sequentlyif the lever K is move@ forward Vin the direction of the arrow, l1`ig`ijf3, both the cams L3 and L4 are partly turned with the shaft L2, and the cams are so formed v'that such a movement moves the clutch-leversglil and M2 toward.each. other,

which forces the clutch-cones C3 and D,8 into the shlellsC2 and 'D2 and locks both the sunf wheel() and the annular Wheel D to the shaft with theshaft A.

A.` Als@ as the ends of the band-clutches G and II are fixed to the peripheries ofthe cams.

L3 and L.4L by the links G2 and H2 this same movement of the ca mf: slackens the bands and .leaves the parts theyembrace free to revolve If, however, instead of moving the lever Kforward it is partly turned on its axis, one of the cams is turned inone direction and the other in the other direction;

This has the effect of engaging one of the clutch-cones with its cone-shell and disengaging the other and at the/same time the band-clutch around the engaged cone is slackened while the other one is tightened.v It `is obvious that turning the lever K in the reverse direction will disengage the cone previously engaged and engage the'other one and vided -on the lever K. The rack K3 is preing-pieces A and A, `and the circular I 'ack Ks to enga-ge vthese 'quadrant-pieces 1s,pro*-:-

vented from rotating on the lever K by the key'K4; but it is free to be moved up the lever to disengage it from the quadrantsN while the leveris adjusted. The spring K5, coniined between the collar K6 upon K and the central boss K7V on thelrack K3, normally keeps the rack down toengage with the quadrant A` small lever'KS, V'pivoted to K and connected by the rod K9 tothe racl; K3, ,is provided to enable the rack to be lifted bythe hand used to' hold and adjust the lever K. Any other 'form of friction-clutch may be employed in stead of the cones and band-clutches shown.

[W'he'n the lever K'is just sufficiently forf ward to slacken the band-clutches Without engagingthe cones, the sprocket-Wheel Bis free to overrun the shaft A. On the other hand,

if the lever K is moved in theopposite direction to the arrow, Fig. 3, the band-clutches are thereby tightened around the cone-shells and act as a brake.

i Ve claimp l. Inl combination, thev drivingshaft, the sun .gear-Wheel journaled. thereon,the gear ring' also journaled thereon, the driven member looseonsaid shaft, the planet gear-wheels journaled to said driven member and engag- `ing both the sun-Wheel andgearring, means for'clutehing the gear-ring to the shaft, means for clutching the sunewheel to the shaft, braking means for holding the sun-Wheel against movement and braking means for holding the gear-ring against movement, substantially as described. Y

2. In combination, the shaft, the sun gearm wheel journaled thereon and having a fric* tion clutch-surface, the gear-ring also jeux-- naled on said shaft and having a friction clutch-surfaee, the driven element journaled on theshaft, planet-'gears carried thereby engaging the ring and sun. gear, frictionclutches adapted to engage either or both of the friction-surfaces carried by the sun-wheel and gear-ring,'and braking devices for holding either the sun-gear or gear-ring stationary, substantially as described'.

8. In combination, the shaft, the sunlgear and gear-ring journaled thereon, the driven element, journaled on the` shaft, planet-gears carried thereby and engaging both the sungear and gearfring, braking-surfaces carried by the said sun-gear and gear-ring, means for clutching one or both saidj parts to the shaft, brakestraps engaging said brakingsurfaces and connections for operating the clutches and brake-straps from a single lever, substantially as described.

4.1 ln combination, the driving-shaft, the

IIO

sun-gear andgeaJr-ring j-ourna'led thereon,and having` clutch and braking surfaces, the drivenlelement a'ls'o journaled on said shaft, planet gears carried thereby engaging the sun-gear and gearwing, clutches for engaging said clutch-surfaces, brakes to operate on said bl'akesurfaees, lever-arms engaging the clutches, a rockshaft,.cams carried thereby adapted to cause one or both to engage the clutch-surfaces, Vmechanism carried by said shaft foralternately operating the brakes,

andmeans foroperatn g said rock-shaft, sub-- stantially as described.

In testimony whereof we have hereunto set our hands in the presence of the two snbscrih- ,-1.5 ing Witnesses.

JOHN OLOUGH. JOSEPH BUSHr Witnesses: .ALBERT` BROWN,

ERNEST OVERTON. 

